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Hot dip plated steel sheet having excellent plating adhesiveness and method of manufacturing the same

An adhesive, hot-dip plating technology, applied in hot-dip plating process, transportation and packaging, coating, etc. Plateability, the effect of speeding up development

Inactive Publication Date: 2013-09-04
POHANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] However, plating adhesion cannot be sufficiently ensured by the above-mentioned related techniques

Method used

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  • Hot dip plated steel sheet having excellent plating adhesiveness and method of manufacturing the same
  • Hot dip plated steel sheet having excellent plating adhesiveness and method of manufacturing the same
  • Hot dip plated steel sheet having excellent plating adhesiveness and method of manufacturing the same

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Experimental program
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Effect test

Embodiment

[0091] In the present invention, a 1.0 mm thick cold-rolled full-hard steel plate having the composition of the following Table 1 is used as a base steel plate, and the base steel plate is oxidized under the conditions described in Table 2 in a direct combustion furnace, and then heated under conventional operating conditions Under the reduction annealing and hot-dip plating process.

[0092] In this case, for samples 1 to 5 in Table 1 below, 10% H at a dew point of -45°C 2 -90%N 2 The reduction annealing treatment is carried out in a mixed atmosphere, specifically, the heat treatment condition of the infiltration section is to keep at 800° C. for 1 minute.

[0093] Meanwhile, for samples 6 to 8 in Table 1 below, 25% H at a dew point of -45°C 2 -75%N 2 The reduction annealing treatment is carried out in the mixed atmosphere of the same method, and the heat treatment condition of the wet section is also kept at 800°C for 1 minute.

[0094] Hot-dip plating was also performed...

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Abstract

Provided is a hot dip plated steel sheet used in automotive materials and a method of manufacturing the same, and more particularly, to a hot dip plated steel sheet having excellent platability and plating adhesiveness in which a steel sheet containing alloying elements forming oxides on a surface of the steel sheet at high temperatures is used as an underlying steel sheet, and a method of manufacturing the same. According to the present invention, a hot dip plated steel sheet having excellent platability and plating adhesiveness is provided, in which a steel sheet containing alloying elements forming oxides on a surface of the steel sheet at high temperatures is used as an underlying steel sheet, and thus, limitations in added amounts of silicon (Si), manganese (Mn), or aluminum (Al) may be mitigated. Therefore, development of new steels may be accelerated.

Description

technical field [0001] The present invention relates to a hot-dip-coated steel sheet for automotive materials and a manufacturing method thereof, and more particularly, to a hot-dip-coated steel sheet having excellent platability and plating adhesion, and its manufacture method. Background technique [0002] As environmental problems become increasingly severe, regulations on fuel economy of automobiles are also increasingly regulated, and therefore, various methods of reducing weight of automobiles have been sought as measures to improve fuel economy. [0003] To this end, steelmakers have worked to create high-strength steel to reduce the weight of steel sheets used in automotive materials while ensuring passenger safety. [0004] Under this trend, there has been an increasing demand for high-strength hot-dip galvanized (Zn) steel sheets for automobile bodies in recent years. However, conventional methods of producing high-strength steels using solid-solution strengtheni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/04C23C2/28C21D1/68
CPCC21D1/32C21D1/68C21D1/74C23C2/04C23C2/28C21D1/52Y10T428/12667Y10T428/1266C23C2/0222C23C2/0038C23C2/02C23C2/0224C23C2/261
Inventor 朴鲁范金钟常朴重喆李铃罗刘泓钟宣判禹韩相局
Owner POHANG IRON & STEEL CO LTD
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